Consider vectors u = (2, 1) and v = (4, -1) with the angle between them equal to 40°. What are the scalar projections uv
and vu?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?